摘要
本文基于氧化石墨烯(GO)、电化学还原氧化石墨烯(ERGO)和氮掺杂石墨烯(NG)三种石墨烯材料修饰的电极制备了镉离子(Cd^(2+))电化学传感器。利用循环伏安法和差分脉冲伏安法分析检测Cd^(2+),系统的比较了不同石墨烯材料修饰电极的电化学性质及检测效果。结果表明GO修饰的传感器在灵敏度、检测限和可重复性方面优于ERGO和NG,说明了石墨烯上含氧基团的存在提高了Cd^(2+)检测的灵敏度。
In this study,electrodes were modified respectively by graphene oxide(GO),electrochemical reduced graphene oxide(ERGO)and nitrogen doped graphene(NG)and were used to prepare the electrochemical sensor for Cd^(2+)detection.Cyclic voltammetry and differential pulse voltammetry were used to detect Cd^(2+).The electrochemical properties and detection effects of different graphene materials modified electrodes were compared systematically.The results showed that the GO-modified sensor was superior to the other two sensors in terms of sensitivity,limit of detection and repeatability,and the oxygen-containing groups on graphene improved the sensitivity of Cd^(2+)detection.
作者
金鑫
李惠惠
鲁理平
JIN Xin;LI Hui-hui;LU Li-ping(Key Laboratory of Beijing on Regional Air Pollution Control,Beijing University of Technology,Beijing 100124,China;State Key Laboratory of Environmental Simulation and Pollution Control,School of Environment, Beijing Normal University,Beijing 100875,China)
出处
《化学研究与应用》
CAS
CSCD
北大核心
2021年第9期1701-1705,共5页
Chemical Research and Application
基金
国家自然科学基金项目(21876005,21777009)资助。
关键词
石墨烯
电化学传感器
化学修饰电极
镉离子
graphene
electrochemical sensor
chemically modified electrode
Cd^(2+)
